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AU563339A - Improvements in telephone systems - Google Patents

Improvements in telephone systems

Info

Publication number
AU563339A
AU563339A AU5633/39A AU563339A AU563339A AU 563339 A AU563339 A AU 563339A AU 5633/39 A AU5633/39 A AU 5633/39A AU 563339 A AU563339 A AU 563339A AU 563339 A AU563339 A AU 563339A
Authority
AU
Australia
Prior art keywords
telephone systems
telephone
systems
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
AU5633/39A
Other versions
AU112235B2 (en
Inventor
Binford Petersen Edward
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Associated Et Ectric Laboratories Inc
Original Assignee
Associated Et Ectric Laboratories Inc
Filing date
Publication date
Application filed by Associated Et Ectric Laboratories Inc filed Critical Associated Et Ectric Laboratories Inc
Application granted granted Critical
Publication of AU112235B2 publication Critical patent/AU112235B2/en
Publication of AU563339A publication Critical patent/AU563339A/en
Expired legal-status Critical Current

Links

AU5633/39A 1939-12-22 Improvements in telephone systems Expired AU112235B2 (en)

Publications (2)

Publication Number Publication Date
AU112235B2 AU112235B2 (en) 1941-01-09
AU563339A true AU563339A (en) 1941-01-09

Family

ID=

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